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Sputum cytology of patients with severe acute respiratory syndrome (SARS) Tse GM; Hui PK; Ma TK; Lo AW; To KF; Chan WY; Chow LT; Ng HKJ Clin Pathol 2004[Mar]; 57 (3): 256-9BACKGROUND: Severe acute respiratory syndrome (SARS) is a newly described form of atypical pneumonia linked to a novel coronavirus. AIMS: To review the sputum cytology of 15 patients who fulfilled the World Health Organisation clinical criteria for SARS in an attempt to evaluate whether early diagnosis is feasible with routine sputum examination. METHODS: All sputum samples from patients with SARS from the four major hospitals in Hong Kong were reviewed; abnormalities were sought in the cellular component, including abnormal numbers and morphology of the component cells compared with those from age matched controls taken over the same period one year ago. RESULTS: Fifteen sputum samples from patients were compared with 25 control samples. In the patients with SARS, loose aggregates of macrophages were seen more frequently in the sputum. These macrophages frequently showed morphological changes, such as cytoplasmic foaminess, vacuole formation, and nuclear changes (including multinucleation and a ground glass appearance) when compared with the control samples. CONCLUSIONS: The cytological features of SARS are non-specific, but the observation of any of the described features should prompt further investigations, especially in patients with suspicious clinical features.|*Sputum/*cytology[MESH]|Adult[MESH]|Aged[MESH]|Cell Nucleus/pathology[MESH]|Cytoplasm/pathology[MESH]|Female[MESH]|Humans[MESH]|Lung/pathology[MESH]|Macrophages/pathology[MESH]|Male[MESH]|Middle Aged[MESH]|Severe Acute Respiratory Syndrome/*pathology[MESH]|Vacuoles/pathology[MESH] |
